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US Patent: 570,470
Rotary Gas Engine
Patentee: Louis Gathman (exact or similar names) - Chicago, IL USPTO Classifications: 123/248, 418/246, 418/263, 418/8 Tool Categories: propulsion and energy : internal combustion engines : rotary engines Assignees: Daniel Y. McMullen - Chicago, IL James B. McMullen - New York, NY George W. McMullen - Picton, ON, Canada David S. McMullen - Evanston, Cook County, IL Roger B. McMullen - Evanston, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 01, 1895 Granted: Nov. 03, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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